Shell rather large, thin, light buff; sculptured with elevated, coronated, thin lamellae and a surface pattern of low, rounded, spiral cords. Post-nuclear whorls five, plus a minute, smooth, papillate protoconch of 1,5 whorls, the apex oblique and inrolled. Spire o,6 height of aperture plus canal. Axial sculpture of very prominent, thin lamellae, produced into erect coronated processes on the shoulder and extending over base to neck of canal, which is rendered prominently scaly by successive terminals of labial varices. Axials six per whorl. Spiral sculpture of rather broad, low, rounded, spiral cords with a narrow thread in each interspace. Labial varix broad, expanded and recurved, evenly arcuate right to the shallowly sinused termination of the anterior canal. Operculum irregularly ovate, with terminal nucleus.
Height 34 mm.; diameter 24 mm. (holotype).
TYPE LOCALITY. Off South Georgia
DENTITION. The central tooth resembles that of T. echinolamellatus in having an arched base and three triangular main cusps, but the intermediates are better developed.
The species differs from T. shackletoni paucilamellatus in having fewer axial lamellae, well-developed spiral sculpture, the labial varix extending to the end of the anterior canal, and in being coloured.